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通常该脚外接一路或多路过载(过电流、过电压)保护检测电路。图2为康佳P2592N彩电CPU(CKP1008S)脚(INT4—保护检测输入端)及外接多路过载保护检测电路。当因某种原因使电路出现过电流、过电压故障时,CPU(CKP1008S)%&$脚电压发生变化(由高电平变为低电平),CPU据此进入保护状态,从CPU’
Usually the foot of one or more external overload (over current, over voltage) protection detection circuit. Figure 2 Konka P2592N color TV CPU (CKP1008S) feet (INT4-protection detection input) and an external multi-channel overload protection detection circuit. When the circuit over-current due to some reason, over-voltage fault, CPU (CKP1008S)% & $ voltage changes (from high to low), the CPU accordingly into the protection state,